Intramolecular Cyclization of Dinitriles via Zirconocene(IV)−Phosphorus Exchange Reactions: Synthesis of σ<sup>3</sup>,λ<sup>3</sup>-1-Phospha- and σ<sup>3</sup>,λ<sup>3</sup>-1,4-Diphospha-2,6-diazines
作者:Alexandrine Maraval、Bruno Donnadieu、Alain Igau、Jean-Pierre Majoral
DOI:10.1021/om990297d
日期:1999.8.1
Dinitrile cyclization reactions leading to new six-membered heterocycles 1-σ3,λ3-phospha-2,6-diazines 3a,b and 1,4-σ3,λ3-diphospha-2,6-diazines 6, 7, and 8 are presented. These syntheses involve dinitrile derivatives, Schwartz reagent [Cp2ZrHCl]n, and phosphorus compounds as promoted cyclization reagents. An X-ray crystal structure of the 1,4-σ3,λ3-diphospha-2,6-diazine 8 is reported.
二腈的环化反应,导致新的六元杂环的1-σ 3,λ 3 -phospha -2,6-二嗪图3a,b和1,4-σ 3,λ 3 -diphospha -2,6-二嗪6,7,和8介绍。这些合成涉及二腈衍生物,施瓦茨试剂的[Cp 2 ZrHCl] Ñ,和磷化合物作为促进环化试剂。1,4-σ的X射线晶体结构3,λ 3 -diphospha -2,6-二嗪8报道。